A.加氫脫氧>加氫脫氮>加氫脫硫 B.加氫脫硫>加氫脫氧>加氫脫氮 C.加氫脫氧>加氫脫硫>加氫脫氮 D.加氫脫氮>加氫脫硫>加氫脫氧
A.預(yù)加氫 B.預(yù)分餾 C.預(yù)硫化 D.預(yù)脫砷
A.焦化 B.催化裂化 C.臨氫降凝 D.加氫裂化